Review Module 6 and 21
What is the percent strength of a 1:10,000 solution?
0.01% (Ratio and proportion: 1 g/10,000 mL = x g/100 mL; x = 0.01 g. By definition 0.01 g/100 mL is 0.01%.)
A patient with cancer is to receive hydromorphone (Dilaudid) 1 mg SUBCUT q3h prn for severe pain. The available strength is 4 mg/mL. How many milligrams should be administered for one dose?
0.25
How many milliliters of U-100 insulin should be administered for a 45-unit dose?
0.45
What is 12:30 AM in military time?
0030
The numerical value of any conversion factor is always:
1
1 cubic centimeter (cc) is equivalent to:
1 mL
One fluid dram is often approximated to equal:
1 tsp
How many tablets are needed for a 0.375 mg dose of digoxin (Lanoxin)? The available strength of digoxin is a 250-mcg tablet.
1.5
A 44-pound child is prescribed azithromycin (Zithromax) oral suspension 10 mg/kg/d for 3 days. What is the daily dose in milliliters? The available strength is 100 mg/5 mL.
10
How many grams of dextrose are needed to prepare 500 mL of 20% dextrose solution?
100 (Ratio and proportion: 20 g/100 mL = x g/500 mL; x = 100 g.)
How much of an error would occur if a technician filled a 1-microgram (mcg) order with a 1-milligram (mg) dose?
1000 times the requested dose
A 1 L IV is ordered to be administered over 8 hours. What is the infusion rate in milliliters per hour (mL/hr)?
125 (Ratio and proportion: 1000 mL/8 hr = x/hr; x = 125.)
What is the infusion rate in millimeters per hour if 500 mL is infused over 4 hours?
125 mL/hr
60° F is equivalent to:
15.55° C
How many 1-pound jars of petroleum jelly should be ordered to prepare 600 g of 1% ointment?
2
How many milliliters of diluent are needed to dilute 500 mL of 70% dextrose to 50% dextrose?
200 (Use: SV ⋅ SP = DV ⋅ DP 500 mL ⋅ 70% = DV ⋅ 50% DV = 700 mL. To achieve the desired volume of 700 mL, 200 mL of water must be added to the stock.)
100° C is equivalent to:
212° F
How many milliliters of 0.9% sodium chloride solution can be made from 20 g of sodium chloride?
2222 (Ratio and proportion: 0.9 g/100 mL = 20 g/x; x = 2222 mL.)
A medication is supplied in a 400-mg scored tablet. A physician prescribes 200 mg every 6 hours for 14 days. How many tablets will be dispensed for the entire course of therapy?
28
To round 0.2347 to the nearest tenth, which number determines whether to round up or down?
3
One fluid ounce is equivalent to _____ mL.
30
How much 1% boric acid solution and 5% boric acid solution are needed to make 60 mL of a 3% boric acid solution?
30 mL of 1% boric acid solution; 30 mL of 5% boric acid solution
How many milligrams would be needed to fill a prescription for ranitidine 75 mg bid × 30 days? (Ranitidine syrup is supplied in 15-mg/mL strength.)
300 (Ratio and proportion: 15 mg/mL = 75 mg ÷ 5 mL; therefore the dose is 5 mL two times per day or 10 mL per day × 30 days, which equals 300 mL.)
86° F is equivalent to:
30° C
How many milliliters of potassium chloride (KCl) solution should be added to 1 L of intravenous (IV) normal saline if 65 mEq total is needed? KCl is supplied in 2 mEq/mL.
32.5 (Ratio and proportion: 2 mEq/mL = 65 mEq/x; x = 32.5 mL.)
What is the Arabic number for the Roman numeral XXXIV?
34
A 50-pound child is prescribed cephalexin 75 mg/kg/d in four divided doses for otitis media. How many milligrams should be administered per dose?
426
A physician has instructed a patient to purchase one pint of Phisohex from the pharmacy. How many milliliters will the patient receive? Group of answer choices
480 ml
A 60-pound child is prescribed amoxicillin 20 mg/kg at bedtime × 10days for otitis media prophylaxis. How many milligrams should be administered per dose?
545
An order calls for 500 mL of heparin is to be administered over 18 hours. The tubing size delivers 15 drops per milliliter (gtt/mL). What is the drip rate?
7 gtt/min
A fraction that is used to convert one unit to another without changing the value of the number is called:
Conversion factor
Which of the following is not a true statement regarding a drop factor?
It is measured in drops per minute (gtt/min).
What is 99 in Roman numerals?
XCIX
When measuring volume using the metric system, a pharmacy technician will use:
mL L
A pharmacy buys $2300 worth of inventory in the month of September. If the invoice is paid before October 10th, a 7.5% discount is applied to the total. How many dollars would the pharmacy save after the discount is applied?
$172.50
The pharmacy purchases 1000 tablets for $99.99. The pharmacist wants to mark up a prescription of 30 tablets by 60%. What is the cost for the patient?
$4.80
A patient is to receive 50 units of insulin each day. How many days will a 10-mL vial of NPH insulin last?
***0.45 (U-100 insulin means that 100 units of insulin per milliliter of fluid is in the vial, which is equal to 1000 units of insulin/10 mL. 1000 units/50 units/day = 20 days.)
How many milliliters of 10% dextrose is needed to prepare 1 L of 50% dextrose from a mixture of 10% dextrose in water (D10W) and 70% dextrose in water (D70W)?
***333 (The alligation method is used to conclude that of the mixture must be D10W and must be D70W.)
A total parenteral nutrition (TPN) order calls for 500 mL of 10% Travasol, 250 mL of 50% dextrose in 250 mL of sterile water. What is the final concentration of the Travasol?
***5% (Use: SV ⋅ SP = DV ⋅ DP500 mL ⋅ 10% = 1000 mL ⋅ DP DP = 5%.)
